root / src / gr / grnet / pithos / web / client / rest / DeleteRequest.java @ 49a8183f
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/*
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* Copyright 2011-2013 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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package gr.grnet.pithos.web.client.rest; |
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import gr.grnet.pithos.web.client.Pithos; |
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import gr.grnet.pithos.web.client.Resource; |
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import java.util.HashMap; |
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import java.util.Map; |
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import com.google.gwt.core.client.Scheduler; |
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import com.google.gwt.core.client.Scheduler.ScheduledCommand; |
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import com.google.gwt.http.client.Request; |
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import com.google.gwt.http.client.RequestBuilder; |
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import com.google.gwt.http.client.RequestException; |
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import com.google.gwt.http.client.Response; |
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/**
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* Created by IntelliJ IDEA. User: chstath Date: 7/5/11 Time: 5:29 PM To change this template use File | Settings | File
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* Templates.
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*/
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public abstract class DeleteRequest implements ScheduledCommand { |
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protected static final int MAX_RETRIES = 3; |
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protected int retries = 0; |
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private String api; |
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protected String owner; |
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private String path; |
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private Map<String, String> headers = new HashMap<String, String>(); |
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public abstract void onSuccess(Resource result); |
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public abstract void onError(Throwable t); |
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public DeleteRequest(String api, String owner, String path) { |
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this.api = api;
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this.owner = owner;
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this.path = path;
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} |
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@Override
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public void execute() { |
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Pithos.LOG("DELETE api = ", api, ", owner = ", owner, ", path = ", path); |
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Pithos.LOG(" ==> ", api + owner + path);
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RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, api + owner + path);
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for (String header : headers.keySet()) { |
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builder.setHeader(header, headers.get(header)); |
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} |
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try {
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builder.sendRequest("", new RestRequestCallback<Resource>(api + owner + path, Response.SC_NO_CONTENT) { |
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@Override
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public void onSuccess(Resource object) { |
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DeleteRequest.this.onSuccess(object); |
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} |
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@Override
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public Resource deserialize(Response response) {
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return Resource.createFromResponse(Resource.class, owner, response, null); |
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} |
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@Override
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public void onError(Request request, Throwable throwable) { |
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if (retries >= MAX_RETRIES)
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DeleteRequest.this.onError(throwable); |
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else
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Scheduler.get().scheduleDeferred(DeleteRequest.this); |
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} |
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@Override
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public void onUnauthorized(Response response) { |
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if (retries >= MAX_RETRIES)
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DeleteRequest.this.onUnauthorized(response); |
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else
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Scheduler.get().scheduleDeferred(DeleteRequest.this); |
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} |
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}); |
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retries++; |
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} |
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catch (RequestException e) {
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Pithos.LOG(e); |
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} |
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} |
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protected abstract void onUnauthorized(Response response); |
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public void setHeader(String header, String value) { |
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headers.put(header, value); |
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} |
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} |